Finding the Fourth Proportional to 128,675.70, 193,014.99 and 53,807.22
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Solution
The fourth proportional to 128,675.70, 193,014.99 and 53,807.22 is: 80,711.43
Step by Step Solution
- Step 1: Write the proportion equation
128,675.70 : 193,014.99 = 53,807.22 : x - Step 2: Convert to fraction form
128,675.70/193,014.99 = 53,807.22/x - Step 3: Cross multiply
128,675.70x = 193,014.99 × 53,807.22 - Step 4: Simplify right side
128,675.70x = 10,385,600,030.23 - Step 5: Solve for x
x = 10,385,600,030.23/128,675.70 - Step 6: Final answer
x = 80,711.43
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.